/*
 * Copyright 2010 Christoph Widulle (christoph.widulle@googlemail.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the
 * License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS"
 * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */



package com.android1.amarena2d.actions.base;

import com.android1.amarena2d.actions.instant.InstantAction;
import com.android1.amarena2d.commons.Function2;
import com.android1.amarena2d.nodes.behavior.ActionTarget;

public class Selector extends InstantAction {

    Action[] actions;
    Function2<ActionTarget, Action[], Action> selectFunction;
    Action active;


    public static Selector $(Function2<ActionTarget, Action[], Action> selectFunction, Action... actions) {
        return new Selector(selectFunction, actions);
    }

    public Selector(Function2<ActionTarget, Action[], Action> selectFunction, Action[] actions) {
        this.actions = actions;
        this.selectFunction = selectFunction;
    }


    @Override
    public void start(ActionTarget target) {
       active = null;
    }

    @Override
    public void tick(float time) {
        if (active == null) {
            active = select();
            active.start(target);
        }
        active.update(time);
        if (active.isDone()) {
            active.stop();
            active = null;
        }
    }

    private Action select() {
        return selectFunction.exec(target, actions);
    }

    @Override
    public boolean isDone() {
        return true;
    }

    @Override
    public Selector copy() {
        return Selector.$(selectFunction, actions);
    }

    @Override
    public Selector reverse() {
        return copy();
    }
}